Apologies for the misunderstanding. Yes T9 is the amount of time to have a valid data after /RD falling edge and after T9 time the user can read data. The user can choose when to read the data after T9 time as long as the /RD and /CS is low and will be valid until 30ns(T10) after /RD goes high.

I would recommend to read data between 25ns after /RD goes low and before /RD goes high, as this is the time that the data are valid.

This timing spec is in minimum because this means that the user can start reading the conversion data after this time. The user should wait at least 25ns after /RD goes low to make sure valid data is being read. As long as the /CS and /RD are low the data can still be read.

For parallel operation, the data can be access when /RD and /CS goes low. The user must start accessing data 25ns or more after /RD goes low . The user may choose to wait or start accusing data beyond 25ns, as long as /RD and /CS is still low.

Apologies for the misunderstanding. Yes T9 is the amount of time to have a valid data after /RD falling edge and after T9 time the user can read data. The user can choose when to read the data after T9 time as long as the /RD and /CS is low and will be valid until 30ns(T10) after /RD goes high.

I would recommend to read data between 25ns after /RD goes low and before /RD goes high, as this is the time that the data are valid.